Judges 10:7-9

7And the anger of Jehovah was hot against Israel, and he sold him into the hand of the Philistines, and into the hand of the children of Ammon.

8And they oppressed and crushed the children of Israel in that year; eighteen years [they oppressed] all the children of Israel that were beyond the Jordan in the land of the Amorites, which is in Gilead.

9And the children of Ammon passed over the Jordan to fight also against Judah, and against Benjamin, and against the house of Ephraim; and Israel was greatly distressed.